本文選題：靜電除塵 + 非晶磁芯��； 參考：《北京交通大學(xué)》2014年碩士論文

【摘要】：摘要：電源作為靜電除塵系統(tǒng)的核心,一直都是國(guó)際除塵領(lǐng)域爭(zhēng)相研究的熱點(diǎn)。本文基于新型非晶磁性材料、大功率電力電子元件、高性能數(shù)字信號(hào)處理芯片等,針對(duì)前沿的高頻靜電除塵電源開(kāi)展研究,主要內(nèi)容如下： 首先,本文研究了靜電除塵的基本原理及特性,對(duì)比分析了高頻靜電除塵電源的優(yōu)越性。研究制定了電源電路的總體設(shè)計(jì)方案,分別對(duì)電源功率電路的整流、濾波、逆變拓?fù)浣Y(jié)構(gòu)進(jìn)行了深入探究,確定了基于PWM脈寬調(diào)制的全橋逆變電路。并針對(duì)高速IGBT的開(kāi)關(guān)損耗進(jìn)行了軟開(kāi)關(guān)技術(shù)的研究。 其次,對(duì)高頻靜電除塵電源的核心部分高頻變壓器進(jìn)行了重點(diǎn)的研制。對(duì)比分析了非晶磁芯材料與傳統(tǒng)磁性材料的特性,給出了非晶變壓器的設(shè)計(jì)原則與方法。分析了高頻變壓器的主要參數(shù)漏感與分布電容,提出了控制變壓器寄生參數(shù)的方法。給出了高頻變壓器的等效電路模型,并應(yīng)用串并聯(lián)諧振逆變技術(shù),對(duì)實(shí)驗(yàn)用功率電路整體進(jìn)行了優(yōu)化。 本文介紹的電源控制系統(tǒng)以DSP數(shù)字芯片為核心,包括硬件電路部分與軟件信號(hào)處理電路兩個(gè)方面。其中硬件部分包括驅(qū)動(dòng)電路、過(guò)電流保護(hù)、采樣電路、信號(hào)調(diào)制、光耦隔離及火花檢測(cè)的探究。 最后,對(duì)除塵電源負(fù)載端的火花控制與電源系統(tǒng)的電磁兼容進(jìn)行了探究與分析。根據(jù)靜電除塵器電暈放電和火花放電的特性及其對(duì)除塵效率的影響,研究了基于PWM信號(hào)調(diào)節(jié)電源輸出功率為基本方法的三段式最佳火花率控制算法；在電磁兼容方面,分析高頻電源系統(tǒng)的干擾源,給出了基于軟硬件的干擾抑制措施。
[Abstract]:Absrtact: as the core of electrostatic dust collection system, power supply has always been a hot topic in the field of international dust collection. Based on new amorphous magnetic materials, high power electronic components, high performance digital signal processing chips and so on, this paper focuses on the research of high frequency electrostatic dusting power supply. The main contents are as follows: Firstly, the basic principle and characteristics of electrostatic dusting are studied, and the advantages of high frequency electrostatic dusting power are compared and analyzed. The overall design scheme of power supply circuit is studied, and the topology of rectifier, filter and inverter of power supply circuit is studied, and the full-bridge inverter circuit based on PWM pulse width modulation is determined. The soft switching technology of high speed IGBT is studied. Secondly, the core part of high-frequency electrostatic dusting power supply is researched and developed. The characteristics of amorphous core materials and traditional magnetic materials are analyzed, and the design principles and methods of amorphous transformers are given. The leakage inductance and distributed capacitance of high frequency transformer are analyzed, and the method of controlling parasitic parameters of transformer is put forward. The equivalent circuit model of high frequency transformer is given, and the power circuit for experiment is optimized by using series and parallel resonant inverter technology. The power supply control system introduced in this paper is based on DSP digital chip, including hardware circuit and software signal processing circuit. The hardware includes driving circuit, overcurrent protection, sampling circuit, signal modulation, optocoupler isolation and spark detection. Finally, the spark control at the load end of the dusting power supply and the electromagnetic compatibility of the power supply system are explored and analyzed. According to the characteristics of corona discharge and spark discharge of electrostatic precipitator and their influence on dust collection efficiency, a three-stage optimal spark rate control algorithm based on PWM signal regulating power output power is studied. The interference source of high frequency power supply system is analyzed, and the interference suppression measures based on software and hardware are given.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：X701.2;TN86

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